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Understanding the Coriolis Effect

Feb 21, 2025

Lecture on the Coriolis Effect

Introduction

  • Explanation using a circle with center, point A, and point B.
  • Point A is double the distance from the center compared to point B.
  • Both points complete a revolution in two seconds.

Concepts of Motion

  • Distance and Speed: Greater distance in the same time implies a higher speed.
    • Point A moves faster than point B.
  • Analogy with Earth:
    • Points closer to the center (e.g., Greenland) spin slower than points further away (e.g., Brazil closer to the equator).

Effect of Earth's Rotation on Objects

  • Inertia and Movement:
    • Objects maintain speed despite changes in Earth's rotational velocity.
    • Cloud Movement:
      • Forming at the equator retains Earth's velocity.
      • Moved north: Cloud moves faster relative to the ground.
      • Moved south: Cloud falls behind as ground moves faster.

Coriolis Effect and Atmospheric Phenomena

  • Low Pressure Cells:

    • Air movement from the equator moves faster, deflects right.
    • Air from the poles moves slower, deflects left.
    • Result: Counterclockwise circular air currents in the northern hemisphere.
    • Example: Hurricanes.
  • Southern Hemisphere:

    • Air from above moves faster, deflects right.
    • Air from below moves slower, deflects left.
    • Result: Clockwise spin of storms.

Miscellaneous

  • Coriolis Effect does not influence toilet water direction.
    • Spin direction depends on jet placement.

Conclusion

  • Summary of the Coriolis Effect.
  • Encouragement to like, subscribe for more content.